#定义变量
name = "张三"
print(name)

#不能使用数字开头 x
# 1name = "李四"

#不能使用python内置关键字
# class = "python"
#严格区分大小写  name == NAME
NAME = "王五"

#不建议使用中文
标识符 = "aaa"
print(标识符)
username = "赵六"
userName = "照照"
user_name = "小明"